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Poplar ply - any good? |
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infrasound 
Old Croc 
Joined: 13 May 2011 Location: Brizzle Status: Online Points: 2216 |
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 Posted: 17 February 2021 at 6:13pm |
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Thanks for the link snowflake! Just what I'm after. With proper bracing, "just" 9mm of poplar ply can exceed the stiffness of 24mm birch plywood in cabinet. Add a CF/GF skin to that and you're fixing that wear resistance  Nb. 'Proper bracing' involves multiple rounds in FEM analysis & isn't a walk in the park. With guessing the bracing, you can go surprisingly far though. Edited by infrasound - 17 February 2021 at 6:16pm |
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VECTORDJ
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Joined: 11 June 2006 Location: United States Status: Offline Points: 373 |
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Posted: 17 February 2021 at 9:05pm |
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Why send all the time and work to make custom speaker cabs and use cheapie ply??? The best I have found is "Finland" 3/4" 4 x 8 foot 100 % birch exterior...........Like a Rock....
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snowflake
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 2616 |
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Posted: 17 February 2021 at 9:19pm |
the good poplar isn't cheap - if anything it's more expensive than birch. |
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VECTORDJ
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Joined: 11 June 2006 Location: United States Status: Offline Points: 373 |
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Posted: 18 February 2021 at 8:02pm |
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I am basing My choice of Finland 4 x 8 sheets as to what is stocked in Maine USA. The Poplar cored ply here has very thin Birch outer layers and is not water proof. Sort of soft too. Go Finland. Like a Rock.
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VECTORDJ wrote: